惠而不費

a kind act that costs nothing

no; not so / (bound form) not; un-

and / as well as / and so / but (not) / yet (not) / (indicates causal relation) / (indicates change of state) / (indicates contrast)

surname Hui

favor / benefit / to bestow / (literary) benevolence / (honorific)

(bound form) act of kindness (from a superior) / (honorific prefix) kind (as in 惠顧|惠顾[hui4 gu4])

surname Fei

to cost / to spend / fee / wasteful / expenses